Baese-Berk Melissa M, Dilley Laura C, Henry Molly J, Vinke Louis, Banzina Elina
Department of Linguistics, 1290 University of Oregon, Eugene, OR, 97403, USA.
Department of Communicative Sciences and Disorders, Michigan State University, Oyer Center, 1026 Red Cedar Road, East Lansing, MI, 48824, USA.
Atten Percept Psychophys. 2019 Feb;81(2):571-589. doi: 10.3758/s13414-018-1626-4.
Listeners resolve ambiguities in speech perception using multiple sources, including non-local or distal speech rate (i.e., the speech rate of material surrounding a particular region). The ability to resolve ambiguities is particularly important for the perception of casual, everyday productions, which are often produced using phonetically reduced forms. Here, we examine whether the distal speech rate effect is specific to a lexical class of words and/or to particular lexical or phonological contexts. In Experiment 1, we examined whether distal speech rate influenced perception of phonologically similar content words differing in number of syllables (e.g., form/forum). In Experiment 2, we used both transcription and word-monitoring tasks to examine whether distal speech rate influenced perception of a reduced vowel, causing lexical reorganization (e.g., cease, see us). Distal speech rate influenced perception of lexical content in both experiments. This demonstrates that distal rate influences perception of a lexical class other than function words and affects perception in a variety of phonological and lexical contexts. These results support a view that distal speech rate is a pervasive source of information with far-reaching consequences for perception of lexical content and word segmentation.
听众利用多种信息源来解决言语感知中的模糊性问题，这些信息源包括非局部或远端语速（即特定区域周围材料的语速）。解决模糊性的能力对于日常随意言语的感知尤为重要，因为日常随意言语通常采用语音简化形式。在此，我们研究远端语速效应是否特定于某一词汇类别和/或特定的词汇或语音语境。在实验1中，我们研究远端语速是否会影响对音节数量不同的语音相似实词（如form/forum）的感知。在实验2中，我们使用转录和单词监测任务来研究远端语速是否会影响对弱化元音的感知，从而导致词汇重组（如cease, see us）。在两个实验中，远端语速均影响了词汇内容的感知。这表明远端语速会影响除功能词之外的某一词汇类别的感知，并在各种语音和词汇语境中影响感知。这些结果支持了这样一种观点，即远端语速是一种普遍存在的信息源，对词汇内容的感知和单词切分有着深远影响。
